Heavy Metal Accumulation and Tissue Damage in Goldfish Carassius auratus

Zhang, Y. M.; Huang, Dejun; Wang, Y. Q.; Liu, J. H.; Yu, Ruilian; Long, Jian

doi:10.1007/s00128-005-0875-9

Cited by 13 publications

(9 citation statements)

References 1 publication

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“…The present results show that lead toxicity was dosage dependent in African catfish embryos, congruent with other results, for example, in gold fish Carassius auratus (Zhang et al, 2005). Lead accumulated mainly in the chorion (Stouthart et al, 1994) as suggested here by the highest concentration in the 30 h-PFS and 48 h-PFS stages.…”

Section: Discussionsupporting

confidence: 92%

Lead induced malformations in embryos of the African catfish Clarias gariepinus (Burchell, 1822)

Osman

Wuertz

Mekkawy

et al. 2007

Environmental Toxicology

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The effect of lead exposure (100, 300, and 500 microg/L lead nitrate) on embryos of the African catfish Clarias gariepinus were examined by gross morphology and histopathology. Exposition to lead nitrate caused a progressively longer delay in hatching and also reduced the percentage of embryos, which successfully completely hatch from 75% in the control group to 40% in the group exposed to 500 microg/L lead. Categories of gross morphological abnormalities comprised four major ones (irregular head shape, pericardial edema, yolk sac edema, and notochordal defect) and two minor deformations (finfold defect and reduction of pigmentation). The frequencies of recorded morphological malformations increased significantly (P < 0.05) with increasing lead concentration in all stages. Four histopathological categories comprising notochordal defect, gill malformation, eye malformation, and detached skin were recorded. All these malformations were recorded only in the embryos exposed to 300 and 500 microg/L lead. The degrees of histological lesions increased with increasing lead concentration and with length of exposure time. Mean concentrations of lead in the whole embryos were measured and the lowest concentrations of lead were recorded in the control groups (0.3-1.0 microg/g wet wt). Accumulated lead increased significantly (P < 0.05) with increasing dose in all stages. Accumulation of lead in the chorion suggests that the chorion acts as an effective barrier protecting the embryo. Low impact of lead on prehatching stages may be related to both the protective capacity of the chorion and the ability of the perivitelline fluid to concentrate lead. The present results show that (i) lead toxicity was dosage dependent and become evident in gross morphological malformations, followed by histopathological changes, and (ii) early life stages of the African catfish C. gariepinus are a very sensitive bioassay for aquatic lead pollution.

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Section: Discussionsupporting

confidence: 92%

Lead induced malformations in embryos of the African catfish Clarias gariepinus (Burchell, 1822)

Osman

Wuertz

Mekkawy

et al. 2007

Environmental Toxicology

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“…The lesions confirmed that exposure to heavy metals can induce histological and pathological changes, as already mentioned in other studies (Damek-Poprawa and Sawicka-Kapusta 2003;Martin-Diaz et al 2006;Raldua et al 2007;Zhang et al 2005). The same type of damage has been reported in the liver and kidneys of fish due to subchronic exposure to Hg (Devlin 2006;Dua and Gupta 2005;Raldua et al 2007), Pb (Chetty et al 2005;Damek-Poprawa and Sawicka-Kapusta 2003;Goswami et al 2005;Liu 2003), As (de Burbure et al 2006;Graeme and Pollack 1998), and Cd (Barregard et al 1999;Buchet et al 1980;Damek-Poprawa and Sawicka-Kapusta 2003).…”

Section: Discussionsupporting

confidence: 82%

Concentration of four heavy metals (cadmium, lead, mercury, and arsenic) in organs of two cyprinid fish (Cyprinus carpio and Capoeta sp.) from the Kor River (Iran)

Ebrahimi

Taherianfard

2009

Environ Monit Assess

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Concentration of heavy metals in aquatic animals mainly occurs due to industrial contamination. In this study, the concentrations of four heavy metals (cadmium, lead, mercury, and arsenic) in organs of two cyprinid fish and in water collected from three sections of the Kor River, Iran were determined using the inductively coupled plasma method. Pathological and hormonal changes due to metal contamination were also measured. The concentrations of heavy metals in tissue of fish from the middle sampling zone were significantly higher (p < 0.05) than those from the other two sampling zones, whereas no significant differences (p > 0.05) were detected between the two sexes and species. High levels of metals were found in the ovaries and testes; estradiol in females and progesterone and testosterone in males from the middle study site were significantly (p < 0.05) lower than values from the other two sites. Pathological changes in blood cells, liver, and kidneys of fishes were significantly higher in highly polluted areas (middle sampling zone). These results show that industrial activities have polluted the river and that the maximum concentrations of Cd, Pb, and Hg were higher than the permissible levels for human consumption.

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“…Moreover, the vacuolated tubules depicted in the literature clearly differ in aspect from those found herein. Additionally, pesticide exposure elicited other tubular and nontubular lesions, which could not be found in our fish (Rangsayatorn et al, 2004; Zhang et al, 2005; Velmurugan et al, 2007 a , 2007 b ).…”

Section: Discussioncontrasting

confidence: 48%

“…Vacuolized tubules were mostly observed in February, being almost absent in the other seasons. Descriptions of vacuolized tubules in fish were found in the literature and were associated with pesticides and heavy metal exposure~Rangsayatorn et Zhang et al, 2005;Velmurugan et al, 2007aVelmurugan et al, , 2007b could suggest that in February our fishes were exposed to some kind of unknown water contaminant. However, this hypothesis seems highly unlikely facing, for instance, the location of the aquaculture station~Torno, Amarante, Portugal!, high in the mountains and fed with pristine water with no record of pollution influence.…”

Section: Discussionmentioning

confidence: 80%

Histological and Stereological Characterization of Brown Trout (Salmo truttaf.fario) Trunk Kidney

et al. 2010

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The large variability in kidney morphology among fish makes it difficult to build a "universal" model on its function and structure. Therefore, a morphological study of brown trout trunk kidney was performed, considering potential seasonal and sex effects. Three-year-old specimens of both sexes were collected at four stages of their reproductive cycle. Kidney was processed for light and electron microscopy. The relative volumes of renal components, such as renal corpuscles and different nephron tubules, were estimated by stereological methods. Qualitatively, the general nephron structure of brown trout was similar to that described for other glomerular teleost species. Quantitatively, however, differences in the relative volume of some renal components were detected between sexes and among seasons. Particularly, highest values of vacuolized tubules and new growing tubules were observed after spawning, being more relevant in females. Despite seasonal changes, more linear correlations were found between those parameters and the reno-somatic index than the gonado-somatic index. Thus, we verified that some brown trout renal components undergo sex dependent seasonal variations, suggesting a morphological adaptation of the components to accomplish physiological needs. These findings constitute a baseline for launching studies to know which factors govern the morphological variations and their functional consequences.

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Heavy Metal Accumulation and Tissue Damage in Goldfish Carassius auratus

Cited by 13 publications

References 1 publication

Lead induced malformations in embryos of the African catfish Clarias gariepinus (Burchell, 1822)

Lead induced malformations in embryos of the African catfish Clarias gariepinus (Burchell, 1822)

Concentration of four heavy metals (cadmium, lead, mercury, and arsenic) in organs of two cyprinid fish (Cyprinus carpio and Capoeta sp.) from the Kor River (Iran)

Histological and Stereological Characterization of Brown Trout (Salmo truttaf.fario) Trunk Kidney

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